2 * Request reply cache. This was heavily inspired by the
3 * implementation in 4.3BSD/4.4BSD.
5 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
11 #include <linux/sunrpc/svc.h>
14 * Representation of a reply cache entry.
17 struct hlist_node c_hash
;
18 struct list_head c_lru
;
20 unsigned char c_state
, /* unused, inprog, done */
21 c_type
, /* status, buffer */
22 c_secure
: 1; /* req came from port < 1024 */
23 struct sockaddr_in c_addr
;
28 unsigned long c_timestamp
;
35 #define c_replvec c_u.u_vec
36 #define c_replstat c_u.u_status
38 /* cache entry states */
55 * We may want to add more types one day, e.g. for diropres and
56 * attrstat replies. Using cache entries with fixed length instead
57 * of buffer pointers may be more efficient.
66 * If requests are retransmitted within this interval, they're dropped.
68 #define RC_DELAY (HZ/5)
70 int nfsd_reply_cache_init(void);
71 void nfsd_reply_cache_shutdown(void);
72 int nfsd_cache_lookup(struct svc_rqst
*);
73 void nfsd_cache_update(struct svc_rqst
*, int, __be32
*);
76 void nfsd4_set_statp(struct svc_rqst
*rqstp
, __be32
*statp
);
77 #else /* CONFIG_NFSD_V4 */
78 static inline void nfsd4_set_statp(struct svc_rqst
*rqstp
, __be32
*statp
)
81 #endif /* CONFIG_NFSD_V4 */
83 #endif /* NFSCACHE_H */
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